Coil-based artifact reduction

被引:26
作者
Atkinson, D [1 ]
Larkman, DJ
Batchelor, PG
Hill, DLG
Hajnal, JV
机构
[1] Univ London Kings Coll, Guys Hosp, Div Imaging Sci, London SE1 9RT, England
[2] Univ London Imperial Coll Sci Technol & Med, Hammersmith Hosp, Robert Steiner MRI Unit, Imaging Sci Dept,Clin Sci Ctr, London W12 0NN, England
基金
英国医学研究理事会;
关键词
parallel imaging; artifact correction; optimization; motion correction;
D O I
10.1002/mrm.20226
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Multiple MRI receiver coils provide extra information and can enable the reconstruction of multiple images using data from different combinations of coils. Comparison of these images shows that artifacts due to motion or flowing blood appear with different intensities due to the differing coil sensitivities. Typically, the artifact appears amplified in regions of low coil sensitivity. An optimization routine was developed to correct for the artifact by comparing reconstructions from various coil combinations and favoring a self-consistent solution. It is demonstrated that images artifacted by blood flowing in the aorta, or translational motion of the head, can be improved. (C) 2004 Wiley-Liss, Inc.
引用
收藏
页码:825 / 830
页数:6
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